Automatic threading device for loom-shuttles.



PATENTED AUG. 18, 1903.

R. L. (JUMNOGK. AUTOMATIC THRBA'DING DEVICE FOR LOOM SHUTTLBS.

I a 5 APPLIOATIOK nmm JAN. a. 1903. ,MODEL.

NlT ED STATES Patented August 18, 1908.

PATENT OFFICE.

ROBERT L. OUMNOOK, OF ANDERSON, SOUTH CAROLINA.

SPECIFICATION forming part of Letters Patent No. 736,500, dated August18, 1903.

Application filed January 3, 1903. Serial No. 137,683. (Model-l To allwhom, it may concern.-

Be it known that I, ROBERT L. OUMNooK, a citizen of the United States,residing at Anderson, Anderson county, South Carolina, have inventedcertain new and useful Improvements in An tomatic Threading Devices forLoom-Shuttles, of which the following is a specification.

My invention relates to self-threading sh u t tles.

By my invention the weft or bobbin is simply placed in the shuttle, andit will thread itself automatically no matter in what position or box ofthe loom the shuttle is placed, (there being two boxes, one at each endof the loom.)

The device is equally applicable to that form of loom-shuttles by whichthe weft is changed automatically, and the strength of my shuttle is notimpaired by cutting away the front end of the shuttle or throwing it outof balance to any material extent.

My object is to simplify the construction and by reducing the weight ofthe threading device to avoid throwing the shuttle out of balance to anymaterial extent.

My invention consists of the structure of the automatic threading devicewhich is in-- sorted in the body of the shuttle and which will beparticularly described hereinafter and its novel features particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a plan View of a shuttleembodying my invention. Fig. 2 is a cross-sectional view on line 2 2 ofFig. 1. Fig. 3 is a perspective view of the automatic threading devicelooking from its rear or inner end. Fig. 4 is a front view. Fig. 5 is aside view looking from the right of Fig. 4. Fig. 6 is a side Viewlooking from the left of Fig. 4. Fig. 7 is a sectional plan view.

The threading device consists of a metal block 1, which is held in arecess 2 in the shuttle by a screw 3, extending through the body of theshuttle and "entering a screwthreaded recess or socket 4, formed in saidblock 1. The block 1 has a projection 5 extending longitudinally alongits lower portion on one side, forming a ledge 6.

The upper surface of the threading device direct the thread at thebeginning of the antomatic threading action to the slit 8 between thethreading device and the opposing wall 9 of the recess 2, formed in theshuttle, as before described, and for the purpose of initially guidingthe thread at the beginning of the automatic threading action the bodyof the shuttle also has an inclined surface 10 formed thereon. The upperinclined surface 7, as shown in Fig. 2, extends laterally beyond theside of the block 1 and is provided with a depending flange 11, arrangedat a slight distance from the side of the block 1 and overhanging theledge 6. The fillingthread on passing down through the slit 8 will bethrown under the lower edge of the depending flange 11 by the whippingaction of the said thread around the bobbin. The flange 11, it will benoticed, is much deeper, as shown in Fig. 5, at its inner or rear end 12than at its point or front end 13, and a narrow throat or opening 14 isthus provided between the rear end of the flange 12 and the ledge 6 forthe whipping in of the weft-thread as it runs off of the bobbin, andwhen once under the said flange 11 it will be retained by the tension onthe thread. When the shuttle reverses its motion after the thread hasbeen caught by the flange 11 the said thread will be directed about theupper front point 13 of the automatic threading device and into theinclined slot 15,extending to the deliveryeye of the shuttle. I

On the side of the threading device opposite to that upon which theflange 11 is located is a spur orprojection 16,havingits point extendingacross the slot 15, and an inclined edge 17, extending from the point 13downwardly to the point 16. The thread asit passes through the slot 15will be directed downwardly along the edge 17 of the spur to the pointthereof. This spur or catch, as

Ioo

so that there will be no liability of the thread flying from the end ofthe shuttle after it has once been threaded through the delivery-eye.

The threading device is provided with a flange 18, extending laterallytherefrom to overlie a portion of the body of the shuttle along the nel11, which is located under the flange 11,

in such a position relatively to the said axial line that the Whippingaction of the thread in leaving the bobbin will cause the said thread tobe thrown under the said flange 11 and into the channel 11.

The threading device is also provided with a forward extension 19 at itslower portion, extending forward of the vertical plane of the frontpoint 13, so that the thread may find a bearing-surface extending alongone entire side of the threading device, around its front end, andpartly along its opposite side, this bearing-surface being formed by theledge 6 along one side and the continuation of said ledge around thefront point of said threading device, as at 6, and along its other sideto the point 6, the ledge 6 inclining downwardly.

The general form of the threading device is wedge shape, with its point13 toward the adjacent end of the shuttle.

It will be seen from the above that the threader is practically onebody, and it is only necessary to attach this in proper position in theloom to provide the automatic threading means in connection therewith.The single block 1 carries all of the devices which are necessary forthe threading operation. The spur 16 projects slightly across thevertical plane of the edge of the slot 15, so that any tendency of thethread to move backwardly along the said slot will bring it intoengagement with the spur. For this purpose the wall 15 of the slot 15 isslightly undercut, so that the spur can project across the vertical edgeof the said slot.

The front end of the device inclines inwardly, as at 13.

I claim as my invention-- 1. An automatic threading-block forloomshuttles having a depending flange on one side thereof extendingvlongitudinally of the shuttle and a spur projecting from the other sideof the block adapted to extend across the inclined slot extending to thethread-delivery eye, substantially as described.

2. In combination with a shuttle having a longitudinal slit 8 for thethread, a depending flange forming one margin of the slit and extendinglongitudinally of the shuttle and under which the thread is whippedautomatically as it leaves the bobbin, the said shuttle having aninclined slot extending to the thread-deliveryeye and communicating withthe slit 8 and a spur for obstructing the backward movement of thethread along the said slit, substantially as described.

3. In combination witha loom-shuttle having a slit 8 extendinglongitudinally and to slot leading to the delivery-eye and a spur forobstructing the backward movement of the thread therefrom, substantiallyas de-' scribed.

4. In combination with a loom-shuttle, an

automatic threading device comprising a flange extending longitudinallyand inclining upwardly toward the point of the shuttle to form a channelfor the thread between itself and the side face of the device and a spurprojecting from the opposite side of the said threading device toobstruct the inclined slot, substantially as described.

5. In combination with a shuttle, an automatic threading devicecomprising a block having a channel extending longitudinally thereof forthe thread, an inclined front end adapted to form an overhanging point13 and a spur projecting from the side of the threading device oppositethat upon which the channel is located, substantially as described.

6. An automatic threading device for loomshuttles having an inclinedupper face, an overhanging flange extendinglongitudinally to form achannel for the thread andhaving upon its opposite side a spur extendingacross and obstructing a thread-slot in the shuttle, substantially asdescribed.

7. An automatic threading device for loomshuttles comprising a block ofgeneral wedge shape having a flange extending along one side to lielongitudinally of the shuttle and inclining upwardly from its inner endto the point of the device and having a projection upon its sideopposite the flange to obstruct the inclined slot in the shuttleextending to the delivery-eye, substantially as described.

8. A threading device for loom-shuttles having a flange arranged to lielongitudinally of the shuttle and inclining from its inner end towardthe point of the shuttle and having upon its other side an inclineextending downwardly from the point and ending in a spur to obstruct thebackward movement of flange and around the front point of the said blockand beneath the spur, the latter portion of the said ledge incliningdownwardly, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT L. OUMNOCK.

Witnesses:

ROUT E. LIGON, J. (J. HARPER.

